I second what Jo says. She seems to use social media effectively for her books.
I followed you with my @fergussonfamily account (which is mainly pictures of me standing in rivers, politics, genealogy) and already contains many SFFChrons members in my followers, but I also have another account with currently 33k followers @greengympenge (which is gardening as exercise, health and environmental stuff). I will followback with both accounts.
Not wanting to reinvent the wheel here, we have had these discussions before and this is what I said about it then:
What are some techniques you can use for social media to publish your work.
www.sffchronicles.com
Basically you need really high numbers of followers to be effective at promoting anything, otherwise you are shouting into space, and doing that takes years of work to achieve. (The @GreenGymPenge account is 8 years old with Tweets daily.) Brian also calculated that only an average of 2% of followers will actually be active, See here:
All my analytics point to Twitter profiles having only 2% active followers. The figure lies between 1-3%, with 2% as a general average. That means someone with 1,000 followers has only around 20-30 who are actively reading their Tweets. Someone with 10,000 followers can expect a couple of...
www.sffchronicles.com
Some Chronners did try to get something going using the #SFFChrons hashtag on a few occasions. See here:
okay, following on from Mouse's thread on twitter and thinking about how we can use it more effectively across the Chrons active writers/publishers/self-publishers whoever. I'm suggesting the above gets used on tweets that are promoting something new, be it cover reveals, shorts, new books...
www.sffchronicles.com
and here:
I'm not sure how effective that was. We got the hashtag in 290 tweets per hour, but it still didn't "trend" as a Twitter topic and so the only people who read the tweets were those who were already taking part.
Facebook, Instagram and Twitter are all different beasts. I don't really do the others, but generally on Facebook, people will read all your posts (like on Chrons). They don't do that on Twitter. Also, on Facebook you can set up pages and groups that may be more effective, but I couldn't say.